Download 02471-14.4 Animal Responses to Disease

Course:
Unit 14:
02.471 Basic Agricultural Science and Technology
Keeping Animals Healthy
Lesson 4: Kinds of Disease and Animal
Responses to Disease
GPS:
AG-BAS-14-e, ELA10RC4 (a), SB4
Objectives:
1. Describe kinds of diseases and give examples of each.
2. Describe the ways animals respond to disease.
Teaching Time:
1 2 hours
References:
Lee, Jasper S. & Diana L. Turner. Introduction to World AgriScience & Technology.
Interstate Publishers, Inc. Danville, IL. 1997.
Materials and Equipment:
Overhead projector
Course: 02.471 Basic Agricultural Science and Technology
Revised May 2007
Unit 14, Lesson 4
1
Georgia Agriculture Education Curriculum
TEACHING PROCEDURE
Introduction and Mental Set
Ask students: Has anyone ever had the chicken pox? If they have, how did
they know that they did? Explain to them that this is a symptom. Discuss
other disease symptoms.
Discussion
1.
What is a symptom? The way a disease shows itself.
2.
What are the two classifications of disease?
A.
Contagious
B.
Noncontagious
3.
What is meant by contagious disease? A disease that can be
spread by direct of indirect contact of the animals.
4.
What are the major causes of contagious disease?
A.
Bacteria
B.
Protozoa
C.
Viruses
D.
Fungi
E.
Parasitic
$ Internal
$ External
5.
What is meant by noncontagious disease? Disease caused by
conditions or substances that aren=t transferred from one animal to
another.
6.
What are some types of noncontagious diseases?
A.
Injuries
B.
Poisons
$ Pesticides
$ Fertilizers
$ Substances in plants (prussic acid)
C.
Faulty body processes
$ Milk fever
Course: 02.471 Basic Agricultural Science and Technology
Revised May 2007
Unit 14, Lesson 4
2
Georgia Agriculture Education Curriculum
D.
E.
$ Heart failure
$ Acetonemia
Congenital diseases
Inadequate nutrition
7.
What is an infectious disease? A disease that gets inside an
animal=s body.
8.
How are animal diseases classified according to the time of
affliction?
A.
Chronic - afflict animals for a long period of time
B.
Acute - afflict animals for a short period of time
9.
What is a body system disease? A disease that attacks only certain
systems of the body.
A.
Digestive system diseases
B.
Genitourinary diseases
C.
Respiratory diseases
D.
Circulatory system diseases
E.
Nervous system diseases
10.
Name some selected diseases and the species of animals it
mainly affects.
A.
Anaplasmosis - Attack red blood corpuscles. Cattle are
primarily affected.
B.
Anthrax - Mostly frequently affects cattle on pasture. Animals
have fever, rapid respiration, and swelling on the neck.
C.
Blackleg - Primarily affects cattle, though sheep and goats can
get it. Symptoms include high fever, swelling in the neck and
shoulder area, muscles in the neck, shoulder, and thighs
crackle when mashed, loss of appetite and death.
D.
Bang=s Disease (brucellosis) - Affects cattle, sheep, goats,
and hogs. Reproductive disease.
E.
Hog Cholera - Highly contagious viral disease of hogs.
F.
Coccidiosis - Parasitic disease of poultry.
G.
Equine Sleeping Sickness - Virus that is transmitted by insects.
H.
Foot and Mouth Disease - Highly contagious disease caused
by a virus that affects animals with cloven (divided) feet.
I.
J.
Grubs (Warbles) - Internal parasites caused by heel flies.
Affect cattle primarily.
Leptospirosis - Bacterial disease that affects cattle, sheep, and
Course: 02.471 Basic Agricultural Science and Technology
Revised May 2007
Unit 14, Lesson 4
3
Georgia Agriculture Education Curriculum
K.
L.
M.
N.
most other farm animals.
Lice - Small blood sucking insects that attack cattle, hogs, and
other species.
Mastitis - Bacterial infection of the udder of female cattle,
sheep, goats, and swine.
Roundworms and tapeworms - Stomach and intestinal worms
that can infect all animals.
Shipping Fever - Environmental disease of cattle and sheep
that is a particular problem for younger animals.
11.
What are the primary defenders against disease?
A.
Skin
B.
Mucous membrane
12.
What are the secondary defenders against disease?
A.
Antibodies
B.
Phagocytes
Summary
Diseases can be classified in several ways: contagious, noncontagious.
Infectious diseases are caused by organisms that get into the animal=s
body.
Evaluation
Written Exam
Course: 02.471 Basic Agricultural Science and Technology
Revised May 2007
Unit 14, Lesson 4
4